C#修改系统环境变量等

一、设置环境变量

public void SetPath(string pathValue)
        {
            string pathlist;
            pathlist = Environment.GetEnvironmentVariable("PATH", EnvironmentVariableTarget.Machine);
            string[] list = pathlist.Split(';');
            bool isPathExist = false;

            foreach (string item in list)
            {
                if (item == pathValue)
                    isPathExist = true;
            }
            if (!isPathExist)
            {
                Environment.SetEnvironmentVariable("PATH", pathlist + ";" + pathValue, EnvironmentVariableTarget.Machine);
            }
        }

二、程序调用批处理

                Process proc = new Process();
                proc.StartInfo.WorkingDirectory = Application.StartupPath;
                proc.StartInfo.FileName = "service install.bat";
                proc.StartInfo.Arguments = String.Format("10");
                proc.StartInfo.CreateNoWindow = true;
                proc.Start();
                proc.WaitForExit();
                MessageBox.Show("Create Success!");